220291899 has 32 divisors (see below), whose sum is σ = 318816000. Its totient is φ = 134790144.

The previous prime is 220291889. The next prime is 220291927. The reversal of 220291899 is 998192022.

It is a happy number.

220291899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220291899 - 2⁹ = 220291387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220291899.

It is not an unprimeable number, because it can be changed into a prime (220291849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 538407 + ... + 538815.

It is an arithmetic number, because the mean of its divisors is an integer number (9963000).

Almost surely, 2^220291899 is an apocalyptic number.

220291899 is a deficient number, since it is larger than the sum of its proper divisors (98524101).

220291899 is a wasteful number, since it uses less digits than its factorization.

220291899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 220291899 is about 14842.2336257047. The cubic root of 220291899 is about 603.9479464446.

The spelling of 220291899 in words is "two hundred twenty million, two hundred ninety-one thousand, eight hundred ninety-nine".